tests: Fix RDMA transport domain test capability validation

Add missing TX capability check in test_flow_rdma_transport_domain_traffic.
The test only validated RX flow table support, but should check both
RX and TX flow table capabilities.

Fixes: fb81142 ("tests: Add test to cover RDMA transport domain")
Signed-off-by: Daniel Hayon <dhayon@nvidia.com>
Signed-off-by: Edward Srouji <edwards@nvidia.com>

Author: Daniel Hayon

tests/test_mlx5_flow.py

@@ -86,7 +86,8 @@ def check_rdma_transport_domain_caps(agr_obj):
     query_adv_rdma_cap_out = QueryAdvRdmaCapOut(agr_obj.ctx.devx_general_cmd(
         query_adv_rdma_cap_in, len(QueryAdvRdmaCapOut())))
 
-    if not query_adv_rdma_cap_out.capability.rdma_transport_rx_flow_table_properties.ft_support:
+    if not query_adv_rdma_cap_out.capability.rdma_transport_rx_flow_table_properties.ft_support or \
+       not query_adv_rdma_cap_out.capability.rdma_transport_tx_flow_table_properties.ft_support:
         raise unittest.SkipTest("The device doesn't support the RDMA transport domain")